Chef knife



FIG. 1 is a perspective view of a chef knife, showing my new design;

FIG. 2 is another perspective view thereof;

FIG. 3 is a front elevational view thereof, the rear elevational view being a mirror image of FIG. 3 ;

FIG. 4 is a left side view thereof;

FIG. 5 is a right side view thereof;

FIG. 6 is a top plan view thereof;

FIG. 7 is a bottom plan view thereof;

FIG. 8 is a partial enlarged view of FIG. 1 ; and,

FIG. 9 is a partial enlarged view of FIG. 2 . 

CLAIM The ornamental design for a chef knife, as shown and described. 